package com.itheima.service.lpml;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.dto.DishDto;
import com.itheima.entiy.Dish;
import com.itheima.entiy.DishFlavor;
import com.itheima.mapper.DishMapper;
import com.itheima.service.DishFlavorService;
import com.itheima.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;


    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        this.save(dishDto);

        Long id = dishDto.getId();

        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
           item.setDishId(id);
           return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }

    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询当前菜品对应的口味信息
        LambdaQueryWrapper<DishFlavor> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(DishFlavor::getDishId,dish.getId());

        List<DishFlavor> list = dishFlavorService.list(wrapper);
        dishDto.setFlavors(list);
        return dishDto;

    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);

        //清楚当前菜品对应口味数据
        LambdaQueryWrapper<DishFlavor> wrapper = new LambdaQueryWrapper<>();

        wrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(wrapper);

        //添加当前提交过来的口味数据
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item) ->{
            item.setDishId(dishDto.getId());
            return item;

        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);

    }




















}
